Page 3 — The Two-Step Preservation Process
According to professionals, specimen preservation follows a strict method.
Step one: fixation.
The specimen is treated with a preservative, traditionally a formaldehyde-based solution called formalin.
This step:
- Stops decomposition
- Locks tissues in place
- Prevents structural collapse
The downside?
The specimen becomes stiff.
And its natural colors begin to change.
Step two: storage.
After fixation, the specimen is transferred to a solution — usually around 70% ethanol.
This keeps the tissue:
